viewstate

Problem with dynamic controls in .NET

眉间皱痕 提交于 2019-11-28 17:38:40
Problem with dynamic controls Hello all, I'm wanting to create some dynamic controls, and have them persist their viewstate across page loads. Easy enough, right? All I have to do is re-create the controls upon each page load, using the same IDs. HOWEVER, here's the catch - in my PreRender event, I'm wanting to clear the controls collection, and then recreate the dynamic controls with new values. The reasons for this are complicated, and it would probably take me about a page or so to explain why I want to do it. So, in the interests of brevity, let's just assume that I absolutely must do this

In ASP.Net, during which page lifecycle event does viewstate get loaded?

允我心安 提交于 2019-11-28 16:20:07
问题 I know it happens sometime before Load, but during what event exactly? 回答1: It's loaded into memory between init and load. See this article for a full break down of the page lifecycle. 回答2: I once got into this question too and got my answer from TRULY understanding Viewstate article, which I highly recommend. After reading it I designed a graphic that helped me to understand better what was happening on between each stage and when and how ViewState was doing its job. I'd like to share this

asp.net c# MVC: How do I live without ViewState?

*爱你&永不变心* 提交于 2019-11-28 15:25:28
I am just looking into converting WebForms to MVC: In .net MVC, what concepts make ViewState something thats not required? If a form is posted back on iteself etc (ie a postback)? how does the page/usercontrol maintain its state? What tricks are people doing to maintain some kind of state and not resort to session state? Surely, a completely stateless environment cant exist? But of course it can. In fact, the web is stateless. Any thoughts to the contrary are the aberration, in fact. Web Controls are gone in MVC. There are no events firing on the server side. This is replaced by two different

How I can deactivate ViewState without Control problems

二次信任 提交于 2019-11-28 14:00:08
I wrote a ASP.NET Application and it run in IIS7 of a Server. If I open this webform in my Browser and show me the Sitecode I see this... I have many Controls how Buttons,Labels,TextBoxes and a ListView. I try to deactivate ViewState in the web.config but if I deactivate this my Application don't run correctly. What can I do? Aristos Deactivate only the controls that not need the viewstate. To do that you need to understand what the viewstate is. Viewstate is where the page save and remember the values of the controls to have them after a post back. Remember that, the viewstate is used after a

How can I take more control in ASP.NET?

|▌冷眼眸甩不掉的悲伤 提交于 2019-11-28 13:15:53
问题 I'm trying to build a very, very simple "micro-webapp" which I suspect will be of interest to a few Stack Overflow'rs if I ever get it done. I'm hosting it on my C# in Depth site, which is vanilla ASP.NET 3.5 (i.e. not MVC). The flow is very simple: If a user enters the app with a URL which doesn't specify all the parameters (or if any of them are invalid) I want to just display the user input controls. (There are only two.) If a user enters the app with a URL which does have all the required

How do you serialize javascript objects with methods using JSON?

瘦欲@ 提交于 2019-11-28 09:42:44
问题 I am looking for an enhancement to JSON that will also serialize methods. I have an object that acts as a collection of objects, and would like to serialize the methods of the collection object as well. So far I've located ClassyJSON. Any thoughts? 回答1: I don't think serializing methods is ever a good idea. If you intend to run the code serverside, you open yourself to attacks. If you want to run it client side, you are better off just the local methods, possibly referencing the name of the

The state information is invalid for this page and might be corrupted. (Only in IE)

只愿长相守 提交于 2019-11-28 09:23:07
Can anybody help me out with this exception. I have tried couple of fixes but nothing worked. I am getting this exception only in IE(7, 8 and 9). When i load the page first time, it brings up a dropdown. where i select a specific vendor and it makes a page post back and returns the required information. If i change the vendor it will still load the information. When i load a control onto page using $.ajax request dynamically and than go back and change the dropdown selection(select a different vendor), it craps out and gave me the following exception. Again it only happens in the IE. The state

Failed to load viewstate. Happening only occasionally. Tough to recreate

半城伤御伤魂 提交于 2019-11-28 09:08:26
Details of Error are given below. This error happens only occasionally / rarely / sometimes and there aren't any steps to reproduce it. How can I know which Control is throwing this Viewstate error? Error Message: Failed to load viewstate. The control tree into which viewstate is being loaded must match the control tree that was used to save viewstate during the previous request. For example, when adding controls dynamically, the controls added during a post-back must match the type and position of the controls added during the initial request. When: Rarely / Occasionally Steps to Recreate:

ASP.NET MVC - Is there a way to simulate a ViewState?

回眸只為那壹抹淺笑 提交于 2019-11-28 07:45:56
I have the following situation... In a certain View, the user must select the initial hour, the final hour and the weekday. But, I can't save this informations to DB 'cause I need to save my whole page and I need the primary key of the primary table, but that's not the point. So, while I don't save these data to DB, I'm saving to a Session. I was told to save to a cookie, but it appears that cookies have a size limit. So, I'm saving to a Session. Buuuut, I was also told that I could save these informations (hours and weekday) to the user page, simulating a ASP.NET ViewState... Does anyone know

What is the equivalent of viewstate in ASP.net MVC [closed]

故事扮演 提交于 2019-11-28 07:00:51
In asp.net pages, during postback, ViewState makes the data persistent. What makes the data persistent in ASP.net MVC? Ajay In Asp.Net we have Runat="Server" to make controls like Textbox,Checkbox... into asp.net controls which they run at server and they can maintain viewstate because of they are server controls. Http is Stateless: Http is stateless i.e; for it forgets the controls value (like Textbox,Checkbox) for every request that means it doesnt maintain state.To make stateful we use state management techniques like ViewState,Querystring,Sessions,Cookies in Asp.Net. Coming to your